package org.microblog.util;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

public class MyBatisUtil {
    private static SqlSessionFactory factory;

    static {
        try {
            InputStream is =  Resources.getResourceAsStream("mybatis-config.xml");
            factory = new SqlSessionFactoryBuilder().build(is);
        }catch (IOException e){
            throw  new RuntimeException("初始化失败",e);
        }
    }
    
    // 创建并返回slqSession实例
    public static SqlSession createSqlSession(){
        return factory.openSession(false);  // 关闭自动提交开启事务
    }
    
    // 关闭
    public static void closeSqlSession(SqlSession sqlSession){
        if (sqlSession!=null){
            sqlSession.close();
        }
    }
}
